(Closed) Should I get satin or organza chair sashes? Please help me decide ASAP!

The feel of our reception is vintage, country, shabby chic. It’s in a converted barn. I’m incorporating lace, silver, galvanized steel, red blooms, chocolate tulle, and lots of LED candles. My chair covers are white (polyester blend) and they need sashes. I’ve decided on chocolate brown–would satin or organza be best? (The price difference is so small that it’s not a factor.)